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| author | Ravi Bangoria <ravi.bangoria@amd.com> | 2026-02-16 04:22:12 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-02-27 16:40:22 +0100 |
| commit | 01336b5559785a136de1cac49705f63a70a755bc (patch) | |
| tree | 1e13b223e3f836b2f43e6e31f21fc1f6bf3ed610 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | da45c8d5f051434a3c68397e66ae2d3b3c97cdec (diff) | |
perf/amd/ibs: Account interrupt for discarded samples
Add interrupt throttling accounting for below cases:
o IBS Op PMU: A software filter (in addition to the hardware filter)
drops samples whose load latency is below the user-specified
threshold.
o IBS Fetch PMU: Samples discarded due to the zero-RIP erratum (#1197).
Although these samples are discarded, the NMI cost is still incurred, so
they should be counted for interrupt throttling.
Fixes: 26db2e0c51fe83e1dd852c1321407835b481806e ("perf/x86/amd/ibs: Work around erratum #1197")
Fixes: d20610c19b4a22bc69085b7eb7a02741d51de30e ("perf/amd/ibs: Add support for OP Load Latency Filtering")
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: https://patch.msgid.link/20260216042216.1440-2-ravi.bangoria@amd.com
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions